The correct sequence of phases in cell cycle is:

1. $G_1\to S\to G_2\to M$${\mathrm{G}}_1\to \mathrm{S}\to {\mathrm{G}}_2\to \mathrm{M}$

2. $M\to G_1\to G_2\to S$$\mathrm{M}\to {\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{S}$

3. $G_1\to G_2\to S\to M$${\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{S}\to \mathrm{M}$

4. $S\to G_1\to G_2\to M$$\mathrm{S}\to {\mathrm{G}}_1\to {\mathrm{G}}_2\to \mathrm{M}$

During what phase in the cell cycle would you find the most DNA per cell?
1. G₁
2. G₂
3. S
4. Prophase II

The figurees below shows 3 phases of mitosis select the option given correct identification together with the correct event ?

1. C- Telophase-Nuclear envelope assembles around the chromosome clusters

2. B- Anaphase-Segregation of homologous chromosomes.

3. A- Prophase-Chromosomes get fully condensed.

4. C- Metaphase-Condensation of chromatin to form chromosome 

Major event that occurs during anaphase of mitosis which brings about equal distribution of chromosomes is:

1. Condensation of chromatin

2. Replication of genetic material

3. Splitting of centromere

4. Pairing of homologous chromosomes

Chromatin condensation and movement of duplicated centriole towards opposite pole can be observed during -

1. Prophase

2. Metaphase

3. Anaphase

4. Telophase

Following are the events occurs during meiosis :

(A) Appearance of chiasmata

(B) Synapsis

(C) Assembly of meiotic spindle

(D) Use of recombinase enzyme

Choose the correct sequence :-

1. A$\to$$\to$B$\to$$\to$C$\to$$\to$D

2. B$\to$$\to$D$\to$$\to$A$\to$$\to$C

3. D$\to$$\to$C$\to$$\to$B$\to$$\to$A

4. B$\to$$\to$C$\to$$\to$A$\to$$\to$D

The microtubules from the opposite poles of the spindle attach to the pair of homologous chromosomes in

1. Metaphase - I 

2. Prophase - I

3. Metaphase 

4. Metaphase - II

Each pole receives half the chromosome number of the
parent cell, is true for which stage?
1. Anaphase - II

2. Anaphase - I

3. Telophase-I 

4. Telophase-II

A reduction step during meiosis is important because:

(1) It returns the chromosome number to normal before fertilization

(2) There is a mechanism for this

(3) Only one copy of each chromosome is necessary

(4) Otherwise chromosome copies would double each fertilization

When does Prophase II start usually?

(1) Chromosomes are fully elongated

(2) Before chromosomes are fully condensed

(3) Before chromosomes are fully elongated

(4) After chromosomes are fully elongated

What do A, B, C and D represent in the following figure?

(1) A : carrier protein, B : symport, C : uniport, D : antiport

(2) A : carrier protein, B : uniport, C : antiport, D : symport

(3) A : carrier protein, B : antiport, C : symport, D : uniport

(4) A : carrier protein, B : uniport, C : symport, D : antiport

Apply concept of water potential and osmosis

Solution of which chamber has a lower solute potential?

Select the correct statement:-

1. Pue water has minimum $\psi \omega$$\psi \omega$

2. Pure water has maximum $\psi \omega$$\psi \omega$

3. Pure water has maximum DPD

4. Pure water has variable DPD

Movement of molecule across a typical plant cell i.e. 50 micrometer takes

Consider the following statements:

I. The apoplast system is continuous throughout the plant, except at the casparian strips of the endodermis.

II. Transport proteins of endodermal cells are control points, where a plant adjusts the quantity and type of solute that reaches the xylem.

III.A $C_4$$C_4$ plant loses about twice as much water as a $C_3$$C_3$ plant for the same amount of $C{O}_2$$C{O}_2$fixed.

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Transpiration 

1. Loss of water in soil 

2. Loss of minerals in soil 

3. Loss of water to the air from the leaves 

4. Loss of organic substances because of photorespiration 

The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and early morning is:

1. Root pressure

2. Imbibition

3. Plasmolysis

4. Transpiration

Consider the following two statements:

I. The direction of movement in the phloem is bi-directional.

II. The source-sink relationship in plants is variable.

1. Both I and II are correct and II explains I

2. Both I and II are correct but II does not explain I

3. I is correct but II is incorrect

4. Both I and II are incorrect 

Prehistoric man used which of the following methods to split rocks and boulders?

(1) Plasmolysis

(2) Active Transport

(3) Osmosis

(4) Imbibition

ln above diagram A is having :-

(1) Hypotonic solution 

(2) Hypertonic solution 

(3) Low $\psi$$\psi$w

(4) Both B & C correct

Alcohol Dehydrogenase needs which of the following ion for activation?

In the given diagram of a typical set up for nutrient solution culture, the purpose of X is:

1. Addition of water
2. Addition of nutrients
3. Removal of wastes
4. Aeration

Deficiency symptoms of an element tend to appear first in young leaves. It indicates that the element is relatively immobile. Which one of the following elemental deficiency would show such symptoms?

1.  Sulphur

2.  Magnesium

3.  Nitrogen

4.  Potassium

Which of the following is not associated with potassium ions?

If by radiation all nitrogenase enzyme are inactivated, then there will be no :-

(1) Fixation of atmospheric nitrogen

(2) Conversion from nitrate to nitrite in legumes

(3) Conversion from ammonium to nitrate in soil

(4) Fixation of nitrogen in legumes

Which of the following is an amide involved in nitrogen metabolism by plants?

1. Methionine

2. Cysteine

3. Serine

4. Asparagine

(a) Soil are reservoir of all mineral elements that are essential for the proper growth and development of plants.

(b) Initial uptake of minerals into the symplast is slow

(c) Uptake of minerals in inner space is rapid

1. All are correct

2. Only (a) is incorrect

3. (b) & (c) are incorrect

4. Only (c) is incorrect

The main amino acid over which Transamination occurs.

Plants obtain Iron in the form of

Which of the following statement is correct?
a. H2S is the hydrogen donor for purple and green sulphur bacteria
b. H2O is the hydrogen donor for purple and green sulphur bacteria
c. Oxygen is evolved by the purple and green sulphur bacteria
d. Oxygen evolved by the green plants comes from the CO2.

In the given graph what does A, B represent?

1. A - Absorption spectrum; B - Action spectrum (Chl. a).

2. A - Action spectrum; B - Absorption spectrum (carotenoids).

3. A - Absorption spectrum; B - Action spectrum (Ch. b).

4. A - Action spectrum; B - Absorption spectrum (Ch.a).

Cyclic photophosphorylation is different from non-cyclic photophosphorylation as the former

1. Is performed by a collaboration of both PS-II and PS-I

2. Does not require any external source of electrons

3. Is connected with photolysis of water

4. Is connected with ATP and NADPH production

The synthesis of one molecule of glucose during the Calvin cycle requires.

1. 12 molecules of ATP and 18 molecules of $NADP{H}_2$$NADP{H}_2$

2. 6 molecules of ATP and 12 molecules of $NADP{H}_2$$NADP{H}_2$

3. 18 molecules of ATP and 12 molecules of $NADP{H}_2$$NADP{H}_2$

4. 12 molecules of each of ATP and $NADP{H}_2$$NADP{H}_2$

In C${}_4$${}_4$ plants CO${}_2$${}_2$ are reduced into sugar is : 

1. Mesophyll cells

2. In bundle sheath cells

3. In spongy parenchyma

4. Both A & B

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant?

(1) C₄

(2) CAM

(3) Nitrogen-fixer

(4) C₃

Identify the symbols A, B and C in the figure given below

1. (1)

2. (2)

3. (3)

4. (4)

A stage in cell division is shown in the figure. Select the answer which gives correct

identification of the stage with its characteristics.

1. Telophase       - Nuclear envelope reforms, Golgi complex reforms

2. Late anaphase -  Chromosomes move away from equatorial plate, Golgi complex not

present

3. Cytokinesis    -  Cell plate formed, mitochondria distributed between two daughter cells

4. Telophase      -  Endoplasmic reticulum and nucleolus not reformed yet

“The synaptonemal complex is formed during _A_
stage and dissolves during _B_ stage”.
Complete the above statement by choosing the correct
option for A and B
         A               B
1. Diplotene    Diakinesis
2. Leptotene   Zygotene
3. Zygotene    Diplotene
4. Pachytene  Diplotene

In the diagram given below showing the pathway of water movement in the root, A, B, C and D respectively represent:

1. Symplastic pathway, Apoplastic pathway, Phloem and Xylem
2. Apoplastic pathway, Symplastic pathway, Phloem and Xylem
3. Symplastic pathway, Apoplastic pathway, Xylem and Phloem
4. Apoplastic pathway, Symplastic pathway, Xylem and Phloem

Which of the following facilitates opening of stomatal aperture?

1. Decrease in turgidity of guard cells

2. Radial orientation of cellulose microfibrils in the cell wall of guard cells.

3. Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells

4. Contraction of outer wall of guard cells

The incorrect statement for facilitated diffusion is
1. Special proteins help move substances across
membranes without expenditure of energy.

2. Can cause net transport of molecules from a low
to a high concentration

3. It is very specific, it allows cell to select substances
for uptake.

4. Transport rate reaches a maximum when all of
the protein transporters are being used

 A mature corn plant absorbs…….. of water in a day while a mustard plant absorbs water equal to its own weight in about…….. 

1. 5L, 3hours 

2. 3L, 5 hours 

3. 5L, 5 hours 

4. 3L, 3 hours 

The criteria for essentiality of an element for a plant include all except:
1. It must be absolutely necessary for supporting normal growth and reproduction
2. The requirement must be specific and not replaceable by another element
3. It must be directly involved in the metabolism of the plant.
4. They must be present in the plants in a concentration in excess of 10 mmole/Kg of dry matter.

Julius Von Sachs
Which of the following is not related?

1. A prominent German Botanist
2. In 1860, he demonstrated for the first time that plants could be grown to maturity in a defined nutrient solution in complete absence of soil
3. The technique, Hydroponics
4. Categorized the essential and non Essential mineral nutrition.

The deficiency symptoms of mobilizable substances appear first in Older parts because

Nitrification does not include

Match the following concerning essential elements and their functions in plants :

(a) Iron            (i) Photolysis of water

(b) Zinc           (ii) Pollen germination

(c) Boron         (iii) Required for chlorophyll biosynthesis

(d) Manganese  (iv) IAA biosynthesis

Select the correct option:

     (a)  (b)  (c)  (d)

1.  (iv) (iii)  (ii)  (i)

2.  (iii)  (iv) (ii)  (i)

3.  (iv)  (i)  (ii)  (iii)

4.  (ii)   (i)  (iv)  (iii)

According to the chemiosmotic hypothesis, there is a basic difference between respiration and photosynthesis. This is _____

1. In chloroplast, H+ accumulation takes place in the lumen of thylakoid but in mitochondria, this takes place in perimitochondrial space.

2. Accumulation of H+ in chloroplast takes place in matrix i.e., stroma and in mitochondria, this takes place in cristae.

3. In both the mitochondria and chloroplast the accumulation of H+ takes place in inter-membranous space but with a high rate in mitochondria

4. Both 1 and 3 are correct.

What is incorrect about bundle sheath cells-
a. Multilayered
b. large number of chloroplasts
c. Intercellular spaces
d. Thick walls

How many statements are correct?
i. Products of dark reaction are substrates of light reaction.
ii. Products of light reaction are substrates of dark reaction.
iii. In the stroma, enzymatic reactions incorporate CO2 into the plant leading to the synthesis of sugar.
iv. Dark reactions are directly light-driven.
v. Chloroplast is a single membranous organelle.

1. 2
2. 3
3. 4
4. 1

In mammals, the teeth are.
I. only two sets, present throughout life.
II. embedded in the socket of the jaw bones.
III. different types.

These conditions are respectively referred as
1. diphyodont, heterodont and thecodont
2. diphyodont, thecodont and heterodont
3. the codont, diphyodont and heterodont
4. thecodon, heterodont and diphyodont

Brunner's gland are characteristic feature of:-

(1) jejunum of small intestine

(2) ileum

(3) duodenum

(4) fundic region of stomach

Mark the incorrect match regarding the process involved
in digestion and absorption?
1. Muscular activities       $\to$$\to$       Hormonal control.
of different parts of the
alimentary canal.
2. Absorption and            $\to$$\to$      Passive process and
transport of water.                       depends upon the
                                                  osmotic gradient.
3. Absorption of fatty       $\to$$\to$      Involvement of micelle.
acid.
4. Large intestine.           $\to$$\to$    Absorption of some water, minerals and certain drugs.

In the given diagram showing anatomical regions of the human stomach, A,B and C respectively represent :

1. Fundus, Cardia and Pylorus

2. Cardia, Pylorus and Fundus

3. Fundus, Pylorus and Cardia

4. Pylorus, Cardia and Fundus

Which of the following structures prevents the back 

flow of faecal matter?

(1) Cardiac sphincter

(2) Pyloric sphincter

(3) lleo-caecal value

(4) Sphincter of Oddi

Which of the following is true about digestion and 

absorption of food?

(1) Trypsin, chymotrypsin and carboxypeptidase are brush border enzymes

(2) The chemical process of digestion is initiated in the oral cavity. About 60% Starch is hydrolysed here by salivary amylase to form maltose

(3) Rennin is a proteolytic enzyme found in gastric juice of infants. Small amount of lipases are also secreted by the gastric glands

(4) If breast feeding is replaced by less nutritive food low in proteins and calories, the infants below the age of one year will suffer from Kwashiorkar

In jaundice - what is not observed?

Match the items given in Column - I with those in Column - II and choose the correct option.

1. (a) - (iii), (b)- (iv), (c)- (ii), (d)-(i)

2. (a) - (iv), (b)- (iii), (c)- (i), (d)-(ii)

3. (a) - (iv), (b)- (iii), (c)- (ii), (d)-(i)

4. (a) - (iii), (b)- (iv), (c)- (i), (d)-(ii)

Which of the following enzyme is not included in

the secretions of the brush border cells of 

mucosa?

(1) Maltase

(2) Dipetidase

(3) Nucleosidease

(4) Carboxypeptidase

When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from 

1. marasmus

2. rickets

3. kwashiorkor

4. pellagra

Match the column I with column II :-
    Column-I                       Column-II
(i) Vomiting                  (a) Inadequate enzyme secretion
(ii) Diarrhoea                (b) Irregular bowel movement
(iii) Constipation           (c) Increased liquidity of faecal discharge
(iv) Indigestion             (d) A feeling of nausea

1. (i)-a, (ii)-c, (iii)-b, (iv)-d
2. (i)-d, (ii)-b, (iii)-c, (iv)-a
3. (i)-d, (ii)-c, (iii)-b, (iv)-a
4. (i)-a, (ii)-b, (iii)-c, (iv)-d

Carrier proteins faciliate the absorption of substance like

1. amino acids and glucose

2. glucose and fatty acids

3. fatty acids and glycerol

4. fructose and some amino acids

Which of the following is true about epiglottis
1. thin elastic cartilaginous flap
2. prevent food entry into larynx
3. Coughing occurs due to its improper movement
4. All of these

Choose the wrong statement
(1)CO2 is the harmful molecule and released during catabolic reactions
(2)respiration will always require O2
(3)Breathing is a part of respiration
(4)All of the above

By the contration in radial muscle of diaphragm it become flattened in shape, so, volume of thoracic cavity increases in :-

1. Anterior-posterior axis

2. Dorsal-ventral axis

3. Anterior-lateral axis

4. Dorsal-lateral axis

The amount of air that enters the lungs during normal, restful breathing is called the______.

1. Vital capacity

2. Tidal volume

3. Total lung capacity

4. Expiratory reserve volume 

Total volume of air a person can expire after a normal inspiration is 

A. Tidal volume               B. TV + ERV

C. Expiratory capacity      D. ERV + RV

1. A only

2. B & C only

3. A, B & C only

4. A,B,C & D

Diffusion membrane consists of

1. Squamous epithelium of alveoli

2. endothelium of alveolar capillaries

3. Basement substance between them

4. All of the above

Given below a diagram of a section of an alveolus
with a pulmonary capillary
Which of the following is a correct statement for
diffusion of gases?

1. Diffusion of O₂ and CO₂
from A to B or B to A takes place with the same rate.

2. O₂ will diffuse faster from A to B than CO₂
from B to A

3. Only O₂ will diffuse from A to B not CO₂
from B to A
4. Only CO₂ will diffuse from B to A, not O₂
from A to B

Which of the following statements is correct regarding ${\mathrm{CO}}_2\mathrm{and}{O}_2$${\mathrm{CO}}_2 \mathrm{and} {\mathrm{O}}_2$ transport in blood ?

1. 100 ml of oxygenated blood carries 53 ml of $O_2$${\mathrm{O}}_2$

2. 100 ml of blood always transport equal amounts of $O_2\mathrm{and}{\mathrm{CO}}_2$${\mathrm{O}}_2 \mathrm{and} {\mathrm{CO}}_2$

3. 100 ml of oxygenated blood delivers more $O_2$${\mathrm{O}}_2$ than ${\mathrm{CO}}_2$${\mathrm{CO}}_2$ to the tissues

4. $O_2\mathrm{and}{\mathrm{CO}}_2$${\mathrm{O}}_2 \mathrm{and} {\mathrm{CO}}_2$ are both maximally transported through the blood plasma 

Which of the following match is correct?

1. Emphysema : reduction of surface area of alveoli and bronchi

2. Pneumonia : occupational disease with asbestos

3. Silicosis : inflammation of alveoli

4. Asthma : excessive secretion of bronchial mucus

Every 2000 mL of deoxygenated blood delivers approximately, how much mL CO${}_2$${}_2$ to alveoli?

1. 4 mL

2. 4.2 mL

3. 8 mL

4. 80 mL

Bulk of carbon dioxide (CO₂) released from
body tissues into the blood is present as :
1. carbamino-haemoglobin in RBCs
2. bicarbonate in blood plasma and RBCs
3. Free CO₂ in blood plasma
4. 70% carbamino-haemoglobin and 30% as
bicarbonate

A center that moderates the functions of the respiratory rhythm center is located in:

1. Dorsal medulla oblongata

2. Ventral medulla oblongata

3. Pons Varolii

4. Pre central gyrus of the cerebrum

Which of the following cell will play a role in resistance of infection and allergic reaction?

(1) Eosinophil

(2) Basophil

(3) Lymphocyte

(4) Neutrophils

Choose the incorrect match w.r.t blood components

1. Leucocytes – 6000 - 8000 mm^–3

2. Globulins – Involved in defence mechanisms

3. O^– blood group – Antibodies A and B absent

4. Thrombokinase – Converts prothrombin into thrombin

Erythroblastosis fetalis can be prevented during a second pregnancy in a Rh negative mother who is likely to carry a Rh positive fetus by:

1. Administering anti – Rh antibodies to the mother just before the delivery of the second child

2. Administering Rh antigen to the mother just after the delivery of the first child

3. Administering Rh antigen to the mother just before the delivery of the second child

4. Administering anti – Rh antibodies to the mother just after the delivery of the first child

Fibrins are formed by conversion of _______ in _______ by the enzyme _______

(1) Fibrinogen, serum, Thrombokinase

(2) prothrombin, plasma, thrombin

(3) Fibrinogen, plasma, thrombin

(4) Prothrombin, blood, thrombokinase

The inter-atrial septum in the human heart can be best described as:

1. A thin muscular wall

2. A thick muscular wall

3. A thin fibrous tissue

4. A thick fibrous tissue

The passage of blood from left atrium to body is

(1) left atrium – left ventricle – Aorta – Body

(2) left atrium – right ventricle – Aorta – Body

(3) left atrium – left ventricle – Pulmonary Artery – Body

(4) left atrium – left ventricle – Pulmonary Veins – Body

The pumping pressure of healthy heart is

(1) 120 mmHg

(2) 80 mmHg

(3) 140 mmHg

(4) 90 mmHg

Which of the following sequences best represents the pathway of an action potential through the Heart's conduction system?

(i) Sino-atrial (SA) node

(ii) Purkinje fibres

(iii) Bundle of His

(iv) Atrio-ventricular (AV) node

(v) Right and left bundle branches

1. (i),(iv),(iii),(ii),(v)

2. (iv), (i),(iii),(v),(ii)

3. (iii),(iv),(i),(ii),(v)

4. (i),(iv),(iii),(v),(ii)

In ECG the ventricular contraction occurs

1.  Just after P wave and before Q wave.

2.  Just after Q wave but before T wave.

3.  In between S-T segment.

4.  After the end of T wave.

Consider the following four statements (a-d) and select the option which includes all the correct :-

(a) Coronary Artery disease, (CAD) often referred
to as Atherosclerosis

(b) Heart failure means when the heart muscle is
suddenly damaged by an inadequate blood supply

(c) High blood pressure leads to heart diseases and
also affects vital organs like brain and kidney

(d) Angina occurs due to conditions that affect the
blood flow

Options :

1. Statements (b), (c) and (d).
2. Statements (a), (b).
3. Statements (b), (d).
4. Statement (a), (c) and (d).

Read the following statements:-

(1) Lymph is devoid of RBC
(2) Exchange of nutrients, gasses etc, between blood and the tissue cell always occur through the lymph
(3) Tissue fluid is also called as lymph.
(4) Lymph is a colourless fluid containing all types of WBCs which are responsible for the immune response of the body.

How many statements are correct?

1. 2

2. 3

3. 4

4. 1

Which of the following are not correct:

(i) Spleen is the graveyard for RBC

(ii) All the mammals have biconcave RBCs

(iii) Clotting factors present in plasma are in active form.

(iv) All the substances released by platelets are involved in clotting only.

(1) (i), (iii), (iv)

(2) (ii), (iii), (iv)

(3) (i), (ii), (iii), (iv)

(4) (ii), (iii)

Which of the following reactions is not catalysed

by a brush border enzyme?

(1) Maltose $\stackrel{\mathrm{Maltase}}{\to }$$\stackrel{\mathrm{Maltase}}{\to }$ gulcose+ gulcose

(2) Lactose $\stackrel{\mathrm{Lactase}}{\to }$$\stackrel{\mathrm{Lactase}}{\to }$ gulcose + gulcose

(3) Starch $\stackrel{\mathrm{Amylase}}{\to }$$\stackrel{\mathrm{Amylase}}{\to }$ Disaccharide

(4) Nucleotides $\stackrel{\mathrm{Nucleotidase}}{\to }$$\stackrel{\mathrm{Nucleotidase}}{\to }$ Nucleoside

Which of the following do not belong to category of brush border enzymes?

1. Lactase, nucleotidase

2. Aminopeptidase, sucrase

3. Procarboxypeptidase, steapsin

4. Nucleosidase, maltase

Which of the following is not the function of the large intestine?

1.  Absorption of some water, minerals and certain drugs

2.  Nutrient absorption

3.  Secretion of mucus to lubricate feces

4.  The temporary storage of feces in rectum

How many of the following statements are wrong?

a. The bile duct and the pancreatic duct open 

      together into the duodenum as the common

      hepato-pancreatic duct which is guarded by 

      sphincter of Boyden.

b. The parotid, sub-maxillary and sub-lingual

      salivary glands are located just outside the 

      buccal cavity.

c. In duodenum, glands are only found in 

     submucoas which are Brunner's glads, a 

     type of simple branched tubular glands.

d. There is no modification of the four layers

      namely serosa, muscularis, sub-mucosa and

      mucosa in differnt parts of alimentary canal.

e. lipases are absent in secreation of gastric

    glands.

(1) One

(2) Two

(3) Three

(4) Four

Which of the following is not observed in Diarrhoea?

In the given figure, identify the muscles involved in raising the rib cage

1. External intercostals 

2. Internal intercostals

3. External obliques

4. Abdominal recti

The partial pressure of $O_2$${\mathrm{O}}_2$ and ${\mathrm{CO}}_2$${\mathrm{CO}}_2$ in the arterial blood respectively is

1. 40 mmHg and 45 mmHg

2. 100 mmHg and 45 mmHg

3. 95 mmHg and 40 mmHg

4. 45 mmHg and 40 mmHg

Which of the following statements are correct w.r.t. transportation of gases?

A. Blood transport ${\mathrm{CO}}_2$${\mathrm{CO}}_2$ comparatively easily because of its higher solubility

B. ${\mathrm{CO}}_2$${\mathrm{CO}}_2$ diffuses into blood, passes into RBCs and reacts with water to form $H_2{\mathrm{CO}}_3$${\mathrm{H}}_2{\mathrm{CO}}_3$

C. 20-25 percent ${\mathrm{CO}}_2$${\mathrm{CO}}_2$ is carried by haemoglobin as carbamino-haemoglobin

D. Oxyhaemoglobin of erythrocytes is basic in nature and it increases pH of blood

1. A only

2. A & B only

3. A, B & C only

4. A, B, C & D

Read the following four statements (a-d) and select
the option which includes all correct ones only :-
(a) Exchange of O₂ and CO₂ at alveoli and tissue
occur by active transport.
(b) Long exposure to industrial dust leads to
inflammation leading to fibrosis and thus
causing serious lung damage.
(c) EICM and IICM are muscles actively involved in
normal and forced breathing respectively.
(d) Spirometer is unable to find out the functional
residual capacity and total lung capacity.

1. b, c and d
2. b and d
3. a, b and d
4. a, b, c and d

Choose the incorrect statement

1. Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO₂ to the alveoli

2. Carbonic anhydrase is present in very high concentration in RBC

3. High pCO₂ and low pO₂ in tissues help in binding of carbon dioxide

4. CO₂ is carried in haemoglobin as carboxyhaemoglobin 

Which of the following does not shift the oxy-haemoglobin dissociation curve to the right?

1. increased pH

2. increased carbon dioxide

3. increased temperature

4. increased 2,3 -DPG

Choose the incorrect match
(1) Cardiac arrest – Condition in which heart

                                  stops beating

(2) T-wave –          Represents depolarization

                            of ventricles

(3) SAN –             Generates maximum
                           number of action
                           potentials

(4) P-wave –          Represents contraction of

                          both atria

What is the effect of parasympathetic neural signals on Heart Activity?

(1) decreases the rate of heart beat

(2) decreases the speed of conduction of action potential

(3) decreases the cardiac output

(4) all of these

In a mm³ of blood, the maximum number and minimum number of cells would be respectively

1. WBCs, RBCs

2. RBCs, WBCs

3. RBCs, Platelets

4. Platelets, WBCs

Serum is-

(1) Blood $-$$-$ corpuscles

(2) Blood $-$$-$ corpuscles $-$$-$ clotting factors

(3) Plasma $-$$-$ clotting factors

(4) Both (2) and (3)

The number of σ and π bonds in the molecule $C_6{H}_6$$C_6{H}_6$ are -

1. 6 C – C sigma (${\sigma }_{C-C})$${\sigma }_{C-C})$ bonds, 5 C–H sigma ($\left({\sigma }_{C-H}\right)$$\left({\sigma }_{C-H}\right)$ bonds, and 3 C=C pi (${\pi }_{C-C}$${\pi }_{C-C}$) 

2. 6 C – C sigma (${\sigma }_{C-C})$${\sigma }_{C-C})$ bonds, 5 C–H sigma ($\left({\sigma }_{C-H}\right)$$\left({\sigma }_{C-H}\right)$ bonds, and 2 C=C pi (${\pi }_{C-C}$${\pi }_{C-C}$) 

3. 6 C – C sigma (${\sigma }_{C-C})$${\sigma }_{C-C})$ bonds, 6 C–H sigma ($\left({\sigma }_{C-H}\right)$$\left({\sigma }_{C-H}\right)$ bonds, and 3 C=C pi (${\pi }_{C-C}$${\pi }_{C-C}$) 

4. 6 C – C sigma (${\sigma }_{C-C})$${\sigma }_{C-C})$ bonds, 6 C–H sigma ($\left({\sigma }_{C-H}\right)$$\left({\sigma }_{C-H}\right)$ bonds, and 2 C=C pi (${\pi }_{C-C}$${\pi }_{C-C}$) 

The IUPAC name of the above-mentioned compound is - 

1. cis-2-Chloro-3-iodo-2-pentene
2. trans-2-Chloro-3-iodo-2-pentene
3. cis-3-Iodo-4-chloro-3-pentene
4. trans-3-Iodo-4-chloro-3-pentene

The pair of structures that does not represent isomers is -

1.   

2.  

3.  

4.  

 The structure of diphenylmethane is given below:

The number of  structural isomers possible when one of the hydrogen atom is replaced by a chlorine atom is -

1. 6       

2. 4       

3. 8       

4. 7

The most stable carbocation among the following is-
$+1.{\left({\mathrm{CH}}_3\right)}_{3}C{\mathrm{CH}}_2$$$\begin{gathered} + \\ 1. {\left({\mathrm{CH}}_3\right)}_3\mathrm{C} {\mathrm{CH}}_2 \end{gathered}$$                       

${2.\left({\mathrm{CH}}_3\right)}_3\stackrel{+}{C}$${2. \left({\mathrm{CH}}_3\right)}_3\stackrel{+}{\mathrm{C}}$

$+3.{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2$$$\begin{gathered} + \\ 3. {\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2 \end{gathered}$$                                    

 $4.{\mathrm{CH}}_3\stackrel{+}{C}H{\mathrm{CH}}_2{\mathrm{CH}}_3$$4.{\mathrm{CH}}_3 \stackrel{+}{\mathrm{C}} \mathrm{H} {\mathrm{CH}}_2{\mathrm{CH}}_3$

The correct order of acidity among the following is-

1. CH₂=CH₂ > CH₃-CH=CH₂ > CH₃C≡CH > CH≡CH

2. CH≡CH > CH₃-C≡CH > CH₂=CH₂ > CH₃ CH₃

3. CH≡CH > CH2=CH2 > CH₃-C≡CH > CH₃-CH₃

4. CH₃-CH₃ > CH₂=CH₂ > CH₃-C≡CH > CH≡CH

$\stackrel{\stackrel{H}{|}}{C}{H}_2-\stackrel{\stackrel{\mathrm{Cl}}{|}}{C}{H}_2\underset{\mathrm{alk}.}{\overset{\mathrm{NaOH}}{\to }}{\mathrm{CH}}_2={\mathrm{CH}}_2$$\stackrel{\stackrel{\mathrm{H}}{|}}{\mathrm{C}}{\mathrm{H}}_2-\stackrel{\stackrel{\mathrm{Cl}}{|}}{\mathrm{C}}{\mathrm{H}}_2\underset{\mathrm{alk}.}{\overset{\mathrm{NaOH}}{\to }}{\mathrm{CH}}_2={\mathrm{CH}}_2$

Most probable mechanism for this reaction is-

1. E1                                         

2. E2

3. $E{1}_{CB}$$E{1}_{CB}$                                     

4. $\alpha$$\alpha$ elimination

An organic compound contains 69% carbon, and 4.8% hydrogen, the remainder being
oxygen. The masses of carbon dioxide, and water produced when 0.20 g of this substance is subjected to complete combustion would be respectively -

1. 0.506 g , 0.0864 g

2. 0.906 g , 0.0864 g

3. 0.0506 g , 0.864 g

4. 0.0864 g, 0.506 g

Match Column I with Column II.

Codes

          A          B          C          D         

1.       3          4           1           2

2.       1          2           3           4

3.       1          4           3           2

4.       4          1           3           2

The correct IUPAC name of the given compound is-

The final product in the above sequence of reactions is-

The most suitable reagent among the following is used to distinguish compound (III) from the rest of the compounds is -

I. ${\mathrm{CH}}_3-C\equiv C-{\mathrm{CH}}_3$${\mathrm{CH}}_3-\mathrm{C}\equiv \mathrm{C}-{\mathrm{CH}}_3$

II. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$${\mathrm{CH}}_3-{\mathrm{CH}}_2-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

III. ${\mathrm{CH}}_3-{\mathrm{CH}}_2-C\equiv \mathrm{CH}$${\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{C}\equiv \mathrm{CH}$

IV. ${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2$${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2$

1. ${\mathrm{Br}}_2$${\mathrm{Br}}_2$/${\mathrm{CCl}}_4$${\mathrm{CCl}}_4$

 2. ${\mathrm{Br}}_2$${\mathrm{Br}}_2$/${\mathrm{CH}}_3\mathrm{COOH}$${\mathrm{CH}}_3\mathrm{COOH}$

3. Alk.${\mathrm{KMnO}}_4$${\mathrm{KMnO}}_4$ 

4. Ammoniacal ${\mathrm{AgNO}}_3$${\mathrm{AgNO}}_3$

The correct order of relatives rates of hydrogenation of alkenes is

1. Ethylene > propene > 2-butene > 2-methyl-2-butene

2. 2-methyl-2-butene > 2-butene > Propene > Ethylene

3. 2-butene > propene > ethylene > 2-methyl-2-butene

4. Propene > 2-butene > ethylene > 2-methyl-2-butene

Arrange the following carbanions in order of their decreasing stability.

A. $H_{3}C-C\equiv C^{-}$${\mathrm{H}}_3\mathrm{C}-\mathrm{C}\equiv {\mathrm{C}}^{-}$

B. $H-C\equiv C^{-}$$\mathrm{H}-\mathrm{C}\equiv {\mathrm{C}}^{-}$

C. $H_{3}C-C{\stackrel{-}{H}}_2$${\mathrm{H}}_3\mathrm{C}-\mathrm{C}{\stackrel{-}{\mathrm{H}}}_2$

1. A>B>C

2. B>A>C

3. C>B>A

4. C>A>B

$\underset{{\mathrm{AlCl}}_3}{\overset{{\mathrm{CH}}_3-\stackrel{O}{\stackrel{\left|\right|}{C}}-\mathrm{Cl}}{\to }}\underset{80\%}{\left(A\right)}\underset{\mathrm{triethylene}\mathrm{glycol},\mathrm{heat}}{\overset{{\mathrm{NH}}_2-{\mathrm{NH}}_2,\mathrm{NaOH}}{\to }}\underset{73\%}{\left(B\right)}$$\underset{{\mathrm{AlCl}}_3}{\overset{{\mathrm{CH}}_3-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-\mathrm{Cl}}{\to }}\underset{80\%}{\left(\mathrm{A}\right)}\underset{\mathrm{triethylene} \mathrm{glycol}, \mathrm{heat}}{\overset{{\mathrm{NH}}_2-{\mathrm{NH}}_2, \mathrm{NaOH}}{\to }}\underset{73\%}{\left(\mathrm{B}\right)}$

The product (B) in the above mentioned reaction is -

1. 

2. 

3. 

4. 

Nitrobenzene on reaction with conc. HNO₃/H₂SO₄ at 80-100$°$$°$C forms -

1. 1,2-Dinitrobenzene

2. 1,3-Dinitrobenzene

3. 1,4-Dinitrobenzene

4. 1,2,4-Trinitrobenzene

Benzene reacts with CH₃Cl in the presence of anhydrous AlCl₃ to form-

1. Toluene

2. Chlorobenzene

3. Benzylchloride

4. Xylene

The reaction/s involved during the formation of photochemical smog are:

$1.N{O}_2\left(g\right)\to NO\left(g\right)+\stackrel{\cdot }{O\left(g\right)}$$1. \space NO_2(g) \rightarrow NO(g) + \stackrel{\cdot}{O(g)}$

$2.\stackrel{\cdot }{O\left(g\right)}+O_2\left(g\right)\to O_3\left(g\right)$$2. \stackrel{\cdot}{O(g)} + O_2(g) \rightarrow O_3(g)$

$3.O_3\left(g\right)+NO\left(g\right)\to N{O}_2\left(g\right)+O_2\left(g\right)$$3.\space O_3(g) + NO(g) \rightarrow NO_2(g) + O_2(g)$

4. All of the above

An incorrect statement regarding acid rain is : 

1. It is formed due to the reaction of ${\mathrm{SO}}_2,\mathrm{and}{\mathrm{NO}}_2$${\mathrm{SO}}_2, \mathrm{and} {\mathrm{NO}}_2$ with rainwater.

2. Causes no damage to monuments like the Taj Mahal.

3. It is harmful to plants.

4. Its pH is less than 5.6

The ozone layer of the upper atmosphere is being destroyed by : 

1. Sulphur dioxide

2. Carbon dioxide

3. Chlorofluorocarbon

4. Smog

Green chemistry means such reactions that-

1. Produce colour during reactions.

2. Reduce the use and production of hazardous chemicals.

3. Are related to the depletion of the ozone layer.

4. Study the reactions in plants.

Photochemical smog formed in congested metropolitan cities mainly consists of : 

1. Ozone, SO₂, and hydrocarbons

2. Ozone, PAN, and NO₂

3. PAN, smoke and SO₂

4. Hydrocarbons, SO₂, and CO₂

A farmer was told that fishes were not fit for human consumption because a large amount of pesticides had accumulated in the tissues of fishes. This happen :

1. By transfer of pesticides in the food chain.

2. By degradation of pesticides.

3. By the reaction of pesticides with atmospheric oxygen.

4. By the reaction of pesticides with atmospheric carbon dioxide.

Match the pollutant (s) in Column I with effect (s) in Column II.

Codes

          A         B          C           D

1.       2          3           4           1

2.       1          2           3           4

3.       1          4           3           2

4.       4          1           2           3

The chemical that is an excellent ‘green’ solvent as well as a greenhouse gas : 

1. Methanol

2. CFCs

3. Carbon monoxide

4. Carbon Dioxide

Assertion: The stability of a crystal is reflected by the magnitude of its melting point.

Reason: Greater the intermolecular forces of attraction, the more will be the stability and melting point of the substance.

1.  Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
2.  Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
3.  Assertion is true, but Reason is false.
4.  Both Assertion and Reason are false.

TiO₂ is a well-known example of:

1. Triclinic system.

2. Tetragonal system.

3. Monoclinic system.

4. None of the above.

CsBr crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 and that of Br = 80 amu and Avogadro number being 6.02×10²³ mol^-1, the density of CsBr is :

1. 42.5 $g/c{m}^3$$g/c{m}^3$

2. 0.425 $g/c{m}^3$$g/c{m}^3$

3. 8.25 $g/c{m}^3$$g/c{m}^3$

4. 4.25 $g/c{m}^3$$g/c{m}^3$

In a compound, atoms of element Y form ccp lattice, and those of element X occupy 2/3^rd of tetrahedral voids. The formula of the compound will be :-

1. X₃Y₄

2. X₄Y₃ 

3. X₂Y₃

4. X₂Y

The density of KCl is 1.9893 g cm^-3 and the length of a side unit cell is 6.29082 Å as

determined by X-ray diffraction. The value of Avogadro’s number calculated from these

data is:-

1. 6.017 x 10²³

2. 6.023 x 10²²

3. 7.03 x 10²³

4. 6.01 x 10¹⁹

A ferric oxide crystallizes in a hexagonal close-packed array of oxide ions with two out of every three octahedral holes occupied by ferric ions. The formula of the ferric oxide is-

1. FeO

2. Fe₂O₃

3. Fe₃O₄

4. Fe₃O₂

A: In hcp structure, each sphere is surrounded by eight other spheres.

R: ABC, ABC ................................ represents hcp structure.

1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

3. Assertion is true statement but Reason is false.

4. Both Assertion and Reason are false statements.

Higher conductivity of p-type and n-type semiconductors is due to :

1. Increase in the number of positive holes and mobile electrons respectively  .

2. Increase in the number of electrons in both types of semiconductors.

3. Increase in the number of positive-holes in both types of semiconductors.

4. None of the above.

A: LiCl shows pink colour, when heated in presence of lithium vapours. 

R: LiCl shows Frenkel defect.

1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.

2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.

3. Assertion is true statement but Reason is false.

4. Both Assertion and Reason are false statements.

Consider the following statements about semiconductor.: 

I. Silicon doped with electron-rich impurity is a p-type semiconductor.

II. Silicon doped with an electron-rich impurity is an n-type semiconductor.

III. Delocalised electrons increase the conductivity of doped silicon.

IV. An electron vacancy increases the conductivity of n-type semiconductor.

The correct statement about semiconductors  is - 

1. (I, II)

2. (II, III)

3. (III, IV)

4. (I, IV)

The correct order of increasing bond length of  C-H, C-O, C-C and C=C is-

1.  $C-C<C=C<C-O<C-H$$\mathrm{C}-\mathrm{C}<\mathrm{C}=\mathrm{C}<\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{H}$

2.  $C-O<C-H<C-C<C=C$$\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{H}<\mathrm{C}-\mathrm{C}<\mathrm{C}=\mathrm{C}$

3.  $C-H<C-O<C-C<C=C$$\mathrm{C}-\mathrm{H}<\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{C}<\mathrm{C}=\mathrm{C}$

4.  $C-H<C=C<C-O<C-C$$\mathrm{C}-\mathrm{H}<\mathrm{C}=\mathrm{C}<\mathrm{C}-\mathrm{O}<\mathrm{C}-\mathrm{C}$

The pair that represents chain isomer is :-

1. 

2. 

3. 

4. 

Consider the following resonating structures of HCOOH

The order of stability is-

1. I>II>III>IV

2. IV>I>II>III

3. I>III>II>IV

4. II>I>III>IV

Match the type of mixture of compounds in Column I with the technique of separation/purification given in column II.

Codes

         A          B          C          D      

1.      3          4           1           2

2.      1          2           3           4

3.      1          4           3           2

4.      4          1           3           2

0.24 g of an organic compound containing phosphorous gave 0.66 g of Mg₂P₂O₇ by the usual analysis. The percentage of phosphorous in the compound is-

1. 77%

2. 72%

3. 87%

4. 60 %

In the following reaction,

Product A is-

1. 

2. 

3. 

4. 

What is the end product of the following sequences of operations?

         ${\mathrm{CaC}}_2\stackrel{H_{2}O}{\to }$${\mathrm{CaC}}_2\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }$A$\underset{{\mathrm{Hg}}^{2+}}{\overset{\mathrm{Dil}.H_2{\mathrm{SO}}_4}{\to }}$$\underset{{\mathrm{Hg}}^{2+}}{\overset{\mathrm{Dil}.{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$B $\underset{H_2}{\overset{\mathrm{Ni}}{\to }}$$\underset{{\mathrm{H}}_2}{\overset{\mathrm{Ni}}{\to }}$C

1. Methyl alcohol 

2. Acetaldehyde

3. $C_2{H}_5\mathrm{OH}$${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$   

4. $C_2{H}_4$${\mathrm{C}}_2{\mathrm{H}}_4$

${\mathrm{CH}}_3\mathrm{Cl}\stackrel{\mathrm{Na}}{\to }$${\mathrm{CH}}_3\mathrm{Cl}\stackrel{\mathrm{Na}}{\to }$Gas A

${\mathrm{CH}}_2\mathrm{COONa}-{\mathrm{CH}}_2\mathrm{COONa}$${\mathrm{CH}}_2\mathrm{COONa}-{\mathrm{CH}}_2\mathrm{COONa}$$\underset{\mathrm{Electrolysis}}{\overset{\mathrm{Kolbe}\text{'}s}{\to }}$$\underset{\mathrm{Electrolysis}}{\overset{\mathrm{Kolbe}\text{'}\mathrm{s}}{\to }}$Gas B

${\mathrm{Mg}}_2{C}_3\stackrel{H_{2}O}{\to }$${\mathrm{Mg}}_2{\mathrm{C}}_3\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }$Gas C

Gas (A+B+C) $\underset{{\mathrm{Cu}}_2{\mathrm{Cl}}_2}{\overset{\mathrm{Ammoniacal}}{\to }}$$\underset{{\mathrm{Cu}}_2{\mathrm{Cl}}_2}{\overset{\mathrm{Ammoniacal}}{\to }}$

gas mixture $\underset{\mathrm{Alk}.{\mathrm{KMnO}}_4}{\overset{\mathrm{Cold}\mathrm{dil}}{\to }}$$\underset{\mathrm{Alk}. {\mathrm{KMnO}}_4}{\overset{\mathrm{Cold} \mathrm{dil}}{\to }}$ Gas X

Gas X is-

1. Gas A + Gas B                      2. Only Gas B

3. Gas B + Gas C                      4. Only Gas A

${\mathrm{CH}}_3\mathrm{Cl}\stackrel{}{\to }{\mathrm{CH}}_4$${\mathrm{CH}}_3\mathrm{Cl} \stackrel{ }{\to }{\mathrm{CH}}_4$

Above conversion can be achieved by:

(1) Zn/H⁺

(2) LiAlH₄

(3) Mg /(ether) then H₂O

(4) all of these

(Only one enantiomer is taken)
Which of the following statement is correct about A and B?
(a) A  and B are mixture of diastereomers
(b) A and B are mixture of enantiomers
(c) A and B are optically active
(d) B is racemic mixture

The main air pollutant among the following is : 

1. CO

2. $C{O}_2$$C{O}_2$

3. $N_2$$N_2$

4. Sulphur

If a lake is contaminated with DDT, it's highest concentration would be found in :

1. Primary consumer

2. Secondary consumer

3. Tertiary consumer

4. None of the above.

The correct order of the packing efficiency in different types of unit cells is-

1.  Fcc < Bcc < Simple cubic

2.  Fcc > Bcc > Simple cubic

3.  Fcc < Bcc > Simple cubic

4.  Bcc < Fcc > Simple cubic

The edge lengths of the unit cells in terms of the radius of spheres constituting fcc, bcc, and simple cubic unit cells are respectively -

1.   $2\sqrt{2r},\frac{4r}{\sqrt{3}},2r$$2\sqrt{2\mathrm{r}}, \frac{4\mathrm{r}}{\sqrt{3}}, 2\mathrm{r}$

2.   $\frac{4r}{\sqrt{3}},2\sqrt{2r},2r$$\frac{4\mathrm{r}}{\sqrt{3}}, 2\sqrt{2\mathrm{r}}, 2\mathrm{r}$

3.   $2r,2\sqrt{2r},\frac{4r}{\sqrt{3}}$$2\mathrm{r}, 2\sqrt{2\mathrm{r}}, \frac{4\mathrm{r}}{\sqrt{3}}$

4.   $2r,\frac{4r}{\sqrt{3}},2\sqrt{2r}$$2\mathrm{r}, \frac{4\mathrm{r}}{\sqrt{3}}, 2\sqrt{2\mathrm{r}}$

(i) Ge is doped with In

(ii) Si is doped with B. 

The semiconductors formed in the above cases are :

1. (i) n-type semiconductor  (ii) p-type semiconductor .

2. (i) p-type semiconductor  (ii) n-type semiconductor .

3. p-type semiconductor in both the cases.

4. n-type semiconductor in both the cases.

Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Then the change in internal energy of the gas is:

1. 0 

2. 5 J

3. 1 J

4. 3 J

A sample of 0.1 g of water at ${100}^{0}C$${100}^0 C$ and normal pressure (1.013 × 10⁵ Nm^–2) requires 54 cal of heat energy to convert it into steam at ${100}^{0}C$${100}^0 C$. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample is:

1. 104.3 J

2. 208.7 J

3. 42.2 J

4. 84.5 J

In a given process dW = 0, dQ < 0, then for the gas:

1.  Temperature -  increases

2.  Volume - decreases

3.  Pressure - decreases

4.  Pressure - increases

Figure shows the P-V diagram of an ideal gas undergoing a change of state from A to B. Four different parts I, II, III and IV as shown in the figure may lead to the same change of state.

(a) Change in internal energy is the same in IV and III cases, but not in I and II.

(b) Change in internal energy is the same in all four cases.

(c) Work done is maximum in case I.

(d) Work done is minimum in case II.

(1) (b, c, d)

(2) (a, d)

(3) (b, c)

(4) (a, c, d)

The pressure of a monoatomic gas increases linearly from $4\times {10}^5$$4\times {10}^5$ N/m² to $8\times {10}^5$$8\times {10}^5$ N/m² when its volume increases from 0.2 m³ to 0.5 m³. The work done by the gas is:

1. $2.8\times {10}^{5}J$$2.8\times {10}^5 \mathrm{J}$

2. $1.8\times {10}^{6}J$$1.8\times {10}^6 \mathrm{J}$

3. $1.8\times {10}^{5}J$$1.8\times {10}^5 \mathrm{J}$

4. $1.8\times {10}^{2}J$$1.8\times {10}^2 \mathrm{J}$

When a cycle tyre suddenly bursts, the air inside the tyre expands. This process is:
1. isothermal
2. adiabatic
3. isobaric
4. isochoric

When a system is taken from the state a to state b along the path acb, it is found that a quantity of heat Q = 200 J is absorbed by the system and a work W = 80 J is done by it. Along the path adb, heat absorbed Q = 144 J. The work done along the path adb is:

1. 6 J

2. 12 J

3. 18 J

4. 24 J

Which of the following is true for the molar heat capacity of an ideal gas?

1. It cannot be negative.

2. It has only two values $(C_P\mathrm{and}{C}_V).$$({\mathrm{C}}_{\mathrm{P}} \mathrm{and} {\mathrm{C}}_{\mathrm{V}}).$

3. It can have any value.

4. It cannot be zero.

An ideal gas heat engine operates in a Carnot cycle between 227ºC and 127ºC. It absorbs 6 × 10⁴ cals of heat at higher temperatures. Amount of heat converted to work is:-

(1) 4.8 × 10⁴ cals

(2) 2.4 × 10⁴ cals

(3) 1.2 × 10⁴ cals

(4) 6 × 10⁴ cals

During an experiment an ideal gas is found to obey an additional law VP² = constant. The gas is initially at temp. T and volume V. What will be the temperature of the gas when it expands to a volume 2V?

1. $T\text{'}=\sqrt{4}T$$\mathrm{T}\text{'}=\sqrt{4}\mathrm{T}$

2. $T\text{'}=\sqrt{2}T$$\mathrm{T}\text{'}=\sqrt{2}\mathrm{T}$

3. $T\text{'}=\sqrt{5}T$$\mathrm{T}\text{'}=\sqrt{5}\mathrm{T}$

4. $T\text{'}=\sqrt{6}T$$\mathrm{T}\text{'}=\sqrt{6}\mathrm{T}$

Compound A ($C_4{H}_8$${\mathrm{C}}_4{\mathrm{H}}_8$) is treated with H₂O/H₂SO₄ gives $C_4{H}_{10}O$${\mathrm{C}}_4{\mathrm{H}}_{10}\mathrm{O}$, an optically inactive compound. The structure of A is-

1. $C{H}_{3}C{H}_{2}CH=C{H}_2$$C{H}_{3}C{H}_{2}CH=C{H}_2$                       

2. $C{H}_{3}CH=CHC{H}_3$$C{H}_{3}CH=CHC{H}_3$